Perforating machine



PERFORATING MACHINE 3 Sheets-Sheet 1 Filed May 26, 1950 INVENTOR KARINICOLAY ATTORNEY Nov. 24, 1953 K. NICOLAY PERFORATING MACHINE 3Sheets-Sheet 2 Filed May 26, 1950 INVENTOR F KARL NICOLAY 'ATTORNEY Nov.24, 1953 K. NICOLAY 2,660,244

PERFORATING MACHINE Filed May 26, 1950 3 Sheets-Sheet 3 FIG.5

8 INVEN1I'OR KARL NICOLAY MWMZMW ATTORNEY Patented Nov. 24, 1953 UNITEDSTATES PATENT @FFICE PERFORATING MACHINE Karl Nicolay, Bielefeld,Germany, assignor to Duerkoppwerke Aktiengesellschaft, Bielefeld,Germany, a. German company 9 Claims.

This invention concerns perforating machines.

In the cutting rooms of modern clothing factories it is no longercustomary to sketch separately on the material the individual portionsof a suit or costume to be out such as fronts, sleeves, collars, pocketsetc., but the whole cutting plan, i. e., all the separate pieces of agarment or of several garments, are drawn on a sheet of papercorresponding to the size of the outspread length of cloth and thenperforated along the cutting lines.

With this paper pattern it is then possible to transfer the wholecutting pattern to the length of material in one operation by blowing orrubbing suitable powder through the perforations.

Apparatus or machines are already in existence for perforating thepatterns. Such machines operate with die and matrix and are stationary,and the forward movement of the paper to obtain the desired distancebetween the perforations is performed by a feed mechanism, movable inall directions.

Because of the size of the paper pattern and the (at times) sharplycurved cutting lines running in all directions it is, however, difiicultto work very quickly and to stamp the perforations exactly on thecutting lines as required. Furthermore, only round perforation holes canbe produced. By another method it is possible to keep the paper firmlyin place and burn out the perforations with an electrically heated disc,in appearance like a thin cogged or toothed wheel. For this, however, aspecial kind of paper is required, which again, has always proved to bea drawback.

It is an object of the invention to provide a perforating machine suchthat the drawbacks of the procedures mentioned above are avoided.

According to the present invention there is provided a perforatingmachine of the type guided by hand over a stationary pattern including adriving motor, a constantly revolving shaft driven by said motor, punchmeans for effecting penetration of said pattern, a spring disposed soasto be capable of imparting striking motion to said punch means, a cammounted on said shaft and effective to control the movement of saidpunch means, and clutch means adapted to cause said cam to rotate withsaid constantly revolving shaft, there being provided a pivotallymounted lever the free end of which is adapted to follow the movement ofsaid cam and in so doing to tension said spring prior to actuation ofsaid punch means.

. The invention will be further described by way of example withreference to the accompanying drawings, in which:

Figure 1 is a general perspective view showing the complete layout,

Figure 2 is a detail showing the paper control,

Figure 3 is a general perspective view showing the perforating machine,

Figure 4 is a section through the perforating machine,

Figure 5 is a further section through the perforating machine,

Figure 6 is a view in longitudinal section of the punch, V

Figure 7 is a transverse cross section through the punch,

Figure 8 is an exploded view of the coupling.

As Figure 1 shows, the complete layout consists of a worktable I, adriving motor II, and a perforating machine l3, which is guided by hand.The frame of the table carries on two opposite sides troughs 2 and 2'for holding and receiving rolled up perforation paper 3 before and afterperforation. The paper drawn from the roll 3 is drawn tightly over thetable top 4. Springs 5 (Figures 1 and 2) which are fixed on to rails 5and 6' press the paper down on the edge of the table top. By this meansthe paper is held tight and always lies smoothly on the table top. Therails 6 and 6 which, to facilitate the insertion of the paper, canquickly be lifted out of the grooves l and 7 are so shaped (Figure 2)that the paper fragments cut out by the perforation, which occasionallyare not picked up by the machine as intended and remain lying on thetable top, will fall into the rails 6 and 6' by drawing the paperpattern across the table top and not on to the floor. The rails are thenperiodically emptied. To protect the table top 4 it should be coveredbefore commencing work with an underlay of stout cardboard 8 which mayconveniently be held by pressure-exerting beadings 9 which in their turnare held in clamps Ill. The motor II is fixed beyond the working surfaceof the table top 4. By means of a flexible shaft [2, said motor I ldrives the hand-guided perforating machine l3. Alongside the flexibleshaft l2 runs an iirgsulated electric lead I which supplies a lamp Whendoing perforating, the machine I3 is pushed by hand over the paper alongthe lines drawn on the paper pattern. The manner in which the machineworks will be seen from Figures 3 to 8. It rests at the back on twosolid feet I6 (Figure 3--only one foot being visible in this view) andin front primarily on a switching foot l1 (Figure 4) provided with teethon its underside. The foot 11 is fixed swingably on a lever 19 by meansof a bolt IS. The lever I9 is itself in turn swingably attached to thebolt 20. A spring 2| pulls the foot I! over by means of a loop 22, alsomoving a switching crank 23 which simultaneously cause the lever l9 torest with its free end on a first cam, denoted 24 in Figure 4. The frontof the foot I! rests against a sprung pin 25 which can be adjustedlongitudinally by an adjustment screw 26 according to the desireddistance between the perforations to be stamped out of the pattern. Theadjustment screw 26 is secured against involuntary movement by a spring21 and a pin 28. The switching crank 23 grips with its deflected end 23under the nose of a switching ring 29 and holds a coupling or clutchmeans (Figure 8) in the disconnected position. If the machine is nowpushed forward the foot I! will, as a result of the teeth on itsunderside, catch in the paper pattern and consequently swing backwardsround the bolt I8 whereby it brings the switching crank 23 over theadjusting screw 30 and just far enough for the bent end 23 to releasethe nose of the switch ring 23. The coupling is thereby engaged and setsthe striking mechanism (described later) in motion. At the same time thecam 2G revolves in the direction of arrow R, (Figure 4) The lever [9which is under pressure from the spring 2|, turns as soon as theflattened part of the cam 2 3 passes at its free end in direction ofarrow RI round the bolt 29 whereby the bolt 18 and therewith the foot i!are raised. The front part of the machine l3 comes thereby to rest onsurface 3| and the foot I! rises to a certain extent from the paperpattern so that the spring 21 can again pull it for ward into itsoriginal position as far as the stop pin 25. The switching crank 23thereby also revolves so that it again grips under the nose of theswitching ring 29 with its deflected end 23' and disengages thecoupling. This cycle of events repeats itself as long as the machine I3is being pushed forward. By altering the adjusting screw 26 and therebythe stop pin 25, the 2 stroke of the foot I? is changed and thus itbecomes possible to vary the distance between the perforations to bemade in the pattern.

If numbers and the like are to be punched in the pattern this can bedone free hand, i. e., it

is unnecessary to push the machine along previously drawn lines. Whendoing so the switching of the coupling must, however, not be done byforcing same by means of the foot l1, and a lever- 32 (Figure 3) istherefore set upwards, whereby a lever 33 (Figure 4) in the interior ofthe machine which is connected with the lever 32 by a shaft mo'v'esdownwards with its free end and presents a firm stop to the pin 34 orthe foot ll so that the latter cannot perform any further switchingmovement. The foot I1 is thereby pressed sufficiently far forward tocause it to become raised so that the toothed portion of the undersidethereof ceases to make contact with the paper pattern; thus the machinecan now be easily moved in all directions.

The engagement follows thereby through a further lever 35 (Figure 3)which by being pressed down immediately presses against aprojections'top 23" (Fig. 3) on the switch crank 23 (Figure 4), allowingthe switching ring 29 to rotate continuously by moving the end 23' ofthe crank 23 out of range of the nose of said ring.

The striking mechanism already mentioned is actuated by a second cam,denoted '36 in Figure 5, cam 36 being situated beside cam 24 and firmlyconnected with same by a pin 52 (Figure 4). On every revolution of thecam 36 a stroke is performed. In Figure 5 the lever 31 fixed on a shaftit) has already arrived at the protuberance on the cam 36. It hasthereby also raised a striking lever 38 fixed on the shaft 40 and put aspring 39 in tension. When the cam 35 now revolves in the direction ofarrow R, the lever 31 flies off the protuberance on the cam 36 and thetightened spring 39 which grips the lever 3?, drives this and therebyalso the striking lever 38 around to the left, and knocks a perforatingpunch 4! into the paper pattern. An adjusting screw 42 which is fixed inthe lever 31 and presses against the striking lever 38 is so adjustedthat the perforating punch does not touch the paper pattern until thelever 31 and thus the spring 39 gripping the latter meet a firm stop.The swing of the striking lever 38 drives the perforating punch into thepattern just so far that a contact screw Mi, which is verticallyadjustable and set approximately paper thickness from the cutting edgeof the perforating punch, rests on the paper. A spring 55 secures thecontact screw 44 against involuntary movement. The spring 45 which isthereby slightly expanded immediately brings the lever 38 back to theadjusting screw 42, serving as a stop. This arrangement is made in orderthat the perforating punch 4| shall remain in the paper only for thebriefest possible moment and also so that it shall not tear same by thecontinuous forward'push. For this purpose a catch it (Figures 5 and 6)in which the perforating punch ll is fastened, is revolvingly fixed inthe striking lever 38 by means of a bolt E6 and in such a manner that itcan swing out backwards. A spring 4! presses the catch 45" on to a stopscrew 38 (Figure 7) so that the perforating punch always standsvertically on the paper surface. According to how the perforating punchis formed it will make round, long or square holes or any other formdesired, such as letters and numbers. The pieces of paper punched outwork upwards inside the perforating punch 4i and work themselves outthrough the hole drilled through the catch 45', falling into the hollowstriking lever 38 to leave same again by 38' whence they are received bya container placed on the outside of the machine. The spring 39 engageson a crank 39 (Figure 5) which bymeans of the lever (Figure 3)v can beturned in order to give the spring 39 a greater or smaller amount ofpro-tension according to the thickness of the paper to be perforated.The perforating machine as already mentioned, is driven by a flexibleshaft [2 and then through a worm 54 and worm wheel 5| (Figure 5). On theshaft 69 of the worm wheel are fixed beside each other cam 336, cam 24and clutch ring 29. The cam 36 and the cam 24 are connected by a pin 52(Figure 8). A spring coil 53 grips with the end in a slit 2 3 in the cam24 and with the other end "53" in the slit 29' in the clutch ring 25. Inthe engaged position, the coupling draws itself tight on the shaft 66 ofthe worm wheel 7 5i and carries with it the parts to be driven.

engaged so that said lever 31 can drop into the first segment 36 of thecam 36. The spring coil 53 is thereby expanded and lifts from the shaftof the worm wheel 5 l so that no further carrying along can take place.When re-engaging the coupling the clutch ring 29 is then again fixedwhereby the spring coil 53 as a result of its tension again grips firmlyon the shaft of the worm wheel and carries along the parts which are tobe driven.

Iclaim:

1. A perforating machine of the type guided by hand over a stationarypattern including a driving motor, a constantly revolving shaft drivenby said motor, punch means for effecting penetration of said pattern, aspring disposed so as to be capable of imparting striking motion to saidpunch means, a cam mounted on said shaft and effective to control themovement of said punch means, and clutch means adapted to cause said camto rotate with said constantly revolving shaft, there being provided apivotally mounted lever, the free end of which is adapted to follow themovement of said cam and in so doing to tension said spring prior toactuation of said punch means.

2. A perforating machine of the type guided by hand over a stationarypattern including punch means for effecting penetration of the pattern,a constantly revolving shaft, a pivotally mounted serrated foot, theserrations of which are adapted to engage the pattern surface and to beheld whilst moving the machine across the pattern, a first cam mountedon said shaft and effective to raise the serrated foot and return sameto its original position after one complete revolution of said shaft, asecond cam mounted on said shaft, connected to the first-mentioned cam,and controlling the movement of said punch means, a switching ring alsomounted on said shaft, a switching crank cooperatively associated withsaid switching ring, the latter normally being prevented by said crankfrom rotating with said shaft and thereby also preventing said cams fromrotating with said shaft, a spring adapted to actuate said punch means,a pivotally mounted lever adapted to follow the movement of said secondcam and in so doing to tension said spring, movement of said machineacross said pattern causing said switching crank to move to such anextent that said switching ring is released and said cams are firmlyconnected with said shaft so as to rotate therewith, further rotation ofsaid second cam releasing said pivotally mounted lever and henceallowing said spring to cause said punch means to penetrate saidpattern.

3. A perforating machine as set forth in claim 2 including adjustablestop means for limiting the angular movement of the serrated foot,whereby the distance between successive perforations in the pattern maybe adjusted.

4. A perforating machine as set forth in claim 2 including a spring coilmounted on said revolving shaft, said coil being adapted to effectcoupling between said first and second mentioned cams, one end of saidcoil being caused in the coupled position to engage said first-mentionedcam, the other end of said coil being similarly caused to engage saidswitching ring, said coil thus firmly gripping said shaft whilst in thecoupled position, said coil being caused to spread out so as to effectdisengagement of the switching ring and said first and second-mentionedcams on movement of the switching crank to prevent rotation of saidswitching ring and through prevention of movement of saidsecondmentioned cam against the direction of rotation by means of saidpivotally mounted lever.

5. A perforating machine as set forth in claim 4 including a stop pincarried by said serrated foot, a manually operable lever adapted toengage said stop pin to urge said foot out of contact with the pattern,and thereby prevent further movement of said foot, and a furthermanually operable lever adapted to move said switching crank out ofrange of said switching ring, Whereby automatic operation of saidmachine controlled by the forward movement thereof is prevented, and thepunch means are actuated periodically by said second cam, in dependenceupon the speed of said rotating shaft.

6. A perforating machine as set forth in claim 5 in which the springmeans urging the punch means towards the pattern may be adjusted to varythe punching force, the adjustment being effected by means of anexternally situated manually operable lever.

'7. A perforating machine as set forth in claim 6 in which said punchmeans comprises a punch carried by a striking lever, said adjustablespring means being adapted to apply force to said striking lever only asfar the the surface of the pattern, and immediately to return to itsinitial conformation, penetration of the pattern being effected by themomentum of said punch.

8. A perforating machine as set forth in claim '7 including also stopmeans to limit the penetration of the punch so that the pattern is onlyjust penetrated.

Q. A perforating machine as set forth in claim 8 in which said strikinglever has rotatably mounted therein a catch, a leaf spring, and a hingepin, said hinge pin securing said catch to said striking lever in such amanner that it can move in a backward direction against the action ofsaid leaf spring.

KARL NICOLAY.

' References Cited in the file of this patent UNITED STATES PATENTSNumber Name Date 988,783 Ingels Apr. 4, 1911 FOREIGN PATENTS NumberCountry Date 176,085 Germany Oct. 13, 1906

